Jack stick and strap assembly for looms



June 29, 1965 C. C. BUTLER ET AL JACK STICK AND STRAP ASSEMBLY FOR LOOMS Filed Nov. 27, 1965 lNVENTOR-S. CLAUDE O. KELLETT S. CHARLIE C. BUTLER.

ATTORNEY United States Patent 3,191,635 JACK STICK AND STRAP ASSEMBLY FOR LOOMS Charlie C. Butler and Claude 0. Kellett, Greenville, S.C., assiguors to Loom Products Co., Inc., Greeuville, S.C., a corporation of South Carolina Filed Nov. 27, 1963, Ser. No. 326,568 2-'Claims. (Cl. 139-88) This invention relates to an improved jack stick and strap arrangement for use in connecting the harnesses to the treadles of a loom.

Jack sticks have, heretofore, been constructed with the means connecting the jack stick and the treadles so fixed that it has been necessary to stock a separate assembly suitable for use on each of the various treadle positions. Thus, in the multiharness looms it becomes necessary to stock a wide variety of jack stick and strap assemblies for use in the many various treadle positions of the looms in the mill. Several efforts have been made to solve the problem outlined above including, a jack stick having vertical projections carried thereby, which are adapted to be received within an opening within the strap arrangement. While such devices have been well received, the vertical projections are easily broken off and make for fairly awkward adjustmut from one strap position to another, since the pins are subject to being struck by the strap as it is slid along the jack stick. Another attempted solution has been offered in the form of a strap having a threaded member which may be turned to lower the threaded member into a hole Within the jack stick. While this device has also been well received, the threads become easily stripped thus, requiring that the strap arrangement be-discarded or repaired, and then too, the adjustment is relatively awkward since it requires turning the threaded member into a hole in order to fix the strap arrangement with respect to the jack stick.

Accordingly, it is an object of this invention to provide an improved jack stick and strap assembly for looms in which simple positive adjustments may be made to accommodate the assembly for use on any treadle position of a loom.

Another important object of the invention is to provide a jack stick and strap assembly in which the strap may be positively positioned and its position adjusted by simple vertical and horizontal sliding movement in which there are no moving parts which may become broken through use.

Another object of the invention is to provide a jack stick and strap assembly for looms which will be economical to produce and simple to operate, requiring no auxiliary tools for its use and in which there are no projecting parts to collect lint and interfere with other loom operations.

The construction designed to carry out the invention will be hereinafter described, together with other features thereof.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawing forming a part thereof, wherein an example of the invention is showri and wherein:

FIGURE 1 is a perspective view illustrating a jack stick and strap assembly for looms constructed in accordance with the present invention,

FIGURE 2 is an enlarged front elevation illustrating the jack stick and strap assembly, and

FIGURE 3 is an enlarged transverse sectional elevation taken on the line 33 in FIGURE 2.

FIGURE 1 illustrates a jack stick and strap assembly positioned upon a loom in which an end frame member is designated at 10. The back girt 11 of the loom supports a treadle shaft bracket 12. The cam shaft 13 has a gear 14 mounted thereon which drives a pinion 15 so as "Ice to in turn drive a gear 16 mounted upon the harness cam the front girt, and that the treadles 18 have a bearing portion 18a mounted upon the treadle shaft. 19;

The treadles 18 carry cam followers 20 which are actu-- ated by the cams. 21 carried upon the harness cam shaft" 17. During the weaving operation, when a treadle 18 is lowered through operation of the cams 21 and cam followers 20, the harnesses 22 are lowered through operation of the jack stick and strap assembly described in greater de tail below.

The jack stick includes an elongated wooden member 23 which is of substantially rectangular cross section. Suitable jack hooks illustrated at 24 serve as means for connecting the wooden member 23 to the lower frame members of the harnesses 22. Thus, the wooden member is horizontally disposed with the major dimension of its rectangular cross section being vertically disposed. Means are provided for connecting the wooden member 23 to the treadles 18 which include a plurality of horizontally spaced transverse notches 25. These notches are located in the upper portion of the wooden member 23 and have downwardly extending converging sides 26.

Strap means 27 are carried by the wooden member 23 for fastening same to the treadles. The strap means 27 includes a pair of elongated side portions 27a and 27b positioned on either side of the wooden member 23. An upper portion 270 carries a downwardly extending transversely disposed insert 28. The insert 28 has complementary side portions 29 for reception within the sides 26. Thus, the notches are open to receive and release the insert through vertical sliding movement of the strap. It will be noted that the side portions 27a and 27b of the strap extend substantially below the wooden member 23 and are inwardly disposed as at 27d. The side portions 27a and 27b extend sufiiciently below the wooden member 23, however, to provide ample limited vertical movement for removing the insert 28 from the notches 25. The rivet 30 is accommodated by the strap below the inwardly disposed portion 27d to fix the strap about the Wooden member 23. The eyebolt 31 is then suitably fastened to the rivet and the usual turnbuckle 32 connects the eyebolt 31 to the treadle hook 33.

While a preferred embodiment of the invention has been described using specific terms, such description is for illustrative purposes only, and it is to be understood that changes and variations may be made without departing from the spirit or scope of the following claims.

What is claimed is:

1. In a jack stick for use in connecting the harnesses to the treadles of a loom, said jack stick having an elongated wooden member of substantially rectangular cross section and means connecting same to the harnesses so that the wooden member is horizontally disposed with the major dimension of the rectangular cross section being vertically disposed, means connecting the wooden member to the treadles including, a plurality of horizontally spaced transverse notches in the upper portion of the wooden member, strap means carried by the wooden member for fastening the wooden member to the treadles, said strap means having a pair of vertical side members confining the wooden member therebetween, a horizontal upper portion bridging said sides normally engaging the upper surface of the wooden member and means spaced below said wooden member confining said strip means thereon but permitting limited vertical sliding movement on the wooden member, a transversely disposed insert fixed upon and extending downwardly from the upper portion of the strap extending within one of said notches, said notches being open to receive and release the insert through said limited vertical Patented June 29, 1965 sliding movement of the strap, said strap means being horizontally slidable on the wooden member when said insert is released from said notches, and means connecting the strap member to the treadles adjustable to permit said,

limited vertical sliding movement and said horizontal sliding movement and to fix said insert within of said notches, whereby a strap may be easily and positively positioned and easily removed from a predetermined position upon the wooden member by sliding movement thereupon.

2. The structure set forth in claim 1, in which the notches have downwardly extending converging sides, and in which the insert is complementary thereto.

References Cited by the Examiner UNITED STATES PATENTS 87,848 3/69 Holden 139-88 293,334 2/84 Kelly 13988 986,634 3/11 Jackson 139-82 2,951,507 9/60 McGuire et al 13988 3,053,284 2/62 League 13988 FOREIGN PATENTS 633,744 10/27 France.

5,444 1886 Great Britain. DONALD W. PARKER, Primary Examiner. 

1. IN A JACK STICK FOR USE IN CONNECTING THE HARNESS TO THE TREADLES OF A LOOM, SAID JACK STICK HAVING AN ELONGATED WOODEN MEMBER OF SUBSTANTIALLY RECTANGULAR CROSS SECTION AND MEANS CONNECTING SAME OF THE HARNESSES SO THAT THE WOODEN MEMBER IS HORIZONTALLY DISPOSED WITH THE MAJOR DIMENSION OF THE RECTANGULAR CROSS SECTION BEING VERTICALLY DISPOSED, MEANS CONNECTING THE WOODEN MEMBER TO THE TREADLES INCLUDING, A PLURALITY OF HORIZONTALLY SPACED TRANSVERSE NOTCHES IN THE UPPER PORTION OF THE WOODEN MEMBER, STRAP MEANS CARRIED BY THE WOODEN MEMBER FOR FASTENING THE WOODEN MEMBER TO THE TREADLES, SAID STRAP MEANS HAVING AN PAIR OF VERTICAL SIDE MEMBERS CONFINING THE WOODEN MEMBER THEREBETWEEN, A HORIZONTAL UPPER PORTION BRIDGING SAID SIDES NORMALLY ENGAGING THE UPPER SURFACE OF THE WOODEN MEMBER AND MEANS SPACED BELOW SAID WOODEN MEMBER CONFINING SAID STRIP MEANS THEREON BUT PERMITTING LIMITED VERTICAL SLIDING MOVEMENT ON THE WOODEN MEMBER, A TRANSVERSELY DISPOSED INSERT FIXED UPON AND EXTENDING DOWNWARDLY FROM THE UPPER PORTION OF THE STRAP EXTEND- 